____________________ cells form myelin around neurons in the PNS, whereas ____________________ form myelin around neurons in the CNS
Fill in the blank(s) with correct word
Schwann, oligodendrocytes
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The thymus gland
A. is typically larger in children. B. is an endocrine gland. C. is seen posterior to the manubrium on axial CT images. D. All of the above
The cells that give rise to osteoblasts are __________ cells.
Fill in the blank(s) with the appropriate word(s).
Which of the following is a function of the heart skeleton?
A. Supplies support and reinforcement for the valves B. Provides a rigid site for cardiac muscle attachment C. Provides electrical insulation between the atria and ventricles D. All of the choices are functions of the heart skeleton.
Hemoglobin releases the same amount of oxygen to all the tissues regardless of variations in their metabolic rate.
Answer the following statement true (T) or false (F)